Alternate ending question

When I was originally told of this movie a friend described a different ending than the one we all know. He explained that through some set of circumstances Brewster ends up with 2 minutes left and he still has $2.01 left. He then frantically finds the nearest store and item to purchase which is a gallon of milk. As he's drinking it like a madman he is reminded that the milk only cost $1.99 and therefore must purchase something additional, but the clerk tells him there's absolutely nothing in the store for that amount. So, with 5 seconds left it comes to him to swallow the 2 cents like aspirin and uses the last of the milk to wash them down.

Was my friend high or is there some sort of alternate ending out there?